package com.cd2cd.code_template.util;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component
public class AppCtxHelper implements ApplicationContextAware {
    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }

    public static <T> T getBean(String beanName) throws BeansException, IllegalArgumentException {
        if (beanName == null || beanName.length() <= 0) {
            throw new IllegalArgumentException("className为空");
        }

        return (T) (applicationContext != null ? applicationContext.getBean(beanName) : null);
    }

    public static <T> T getBean(Class cla) throws BeansException, IllegalArgumentException {
        if (cla == null) {
            throw new IllegalArgumentException("className为空");
        }

        return (T) (applicationContext != null ? applicationContext.getBean(cla) : null);
    }

}